FEDERAL + 50 STATES + WASHINGTON, D.C.
We review official tax publications and summarize important changes in clear, business-focused language.
OFFICIAL UPDATES, PLAIN-LANGUAGE SUMMARY
We review official federal and state publications and explain selected business-relevant changes here in plain language.
The Los Angeles County total rate will rise from 9.75% to 10.25%; Perris from 7.75% to 8.75%; and Red Bluff from 7.50% to 8.50%. New total rates will also apply in many Los Angeles County cities.
Businesses making taxable sales in these areas should verify the destination rate with CDTFA and update POS settings before October 1.
New York revised its 2026 State and Yonkers withholding tables to reflect enacted personal income tax rate reductions.
Employers and payroll providers with New York employees should use the revised tables for 2026 payrolls.
The Florida Department of Revenue published an 11% annual floating interest rate for both January 1–June 30 and July 1–December 31, 2026.
Businesses calculating interest on a late tax payment should verify the rate for the applicable period.
Form PT-350 filing frequency changed from monthly to annually.
This is limited to covered commercial vessel operators and is not a general filing change for all businesses.
We publish a summary only after matching its effective date, scope, and operative rule to an official federal or state source. Every update retains its official supporting link and editorial review date.
Last editorial review: September 3, 2026. This is a selected summary, not an exhaustive list of every federal, state, county, or city change. Applicability must be evaluated for each business.
WHAT WE MONITOR
Each summary shows the effective date, who may be affected, and what a business should review.
Rates, sourcing, economic nexus, and filing frequencies.
Formation, annual reports, addresses, ownership, and dissolution.
Employer registration, withholding, unemployment, and new-hire reporting.
State income, franchise, and entity-level obligations.
50-STATE OFFICIAL SOURCE DIRECTORY
Every summary includes its supporting source. You can also use this directory to reach any state’s official tax authority.
This page is for general information and is not tax or legal advice. Additional rules may apply by state, county, city, product, service, and transaction date.
YOUR STATE, YOUR FACTS